Sir James Chadwick, (20 October 1891 – 24 July 1974) was an English
physicist who was awarded the 1935
Nobel Prize in Physics for his discovery of the
neutron in 1932. In 1941, he wrote the final draft of the
MAUD Report, which inspired the U.S. government to begin serious
atomic bomb research efforts. He was the head of the British team that worked on the
Manhattan Project during the Second World War. He was
knighted in England in 1945 for his achievements in physics.